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Neuroprotective effects of black soybean anthocyanins via inactivation of ASK1-JNK/p38 pathways and mobilization of cellular sialic acids

  • Sung Min Kim
  • , Mi Ja Chung
  • , Tae Joung Ha
  • , Ha Na Choi
  • , Seong Jae Jang
  • , Sung Oog Kim
  • , Myung Hoon Chun
  • , Su Il Do
  • , Young Kug Choo
  • , Yong Il Park
  • The Catholic University of Korea
  • Rural Development Administration
  • Ajou University
  • Wonkwang University

Research output: Contribution to journalArticlepeer-review

77 Scopus citations

Abstract

Aims: To investigate neuroprotective effects of three major anthocyanins (cyanidin-3-O-glucoside, delphinidin-3-O-glucoside, and petunidin-3-O-glucoside) isolated from the black soybean (Glycine max L.) cv. Cheongja 3 seed coat against H 2O 2-induced cell death of human brain neuroblastoma SK-N-SH cells. Main methods: Cell viability, reactive oxygen species (ROS) generation, production and expression of heme oxygenase (HO)-1 and inactivation of mitogen-activated protein (MAP) kinase cascades were determined by MTT assay, 2,7-dichlorofluorescein diacetate (DCF-DA) assay, reverse transcriptase polymerase chain reaction (RT-PCR), and western blotting, respectively. Key findings: Pretreatment with anthocyanins reduced the cytotoxicity of H 2O 2 on SK-N-SH cells, dose-dependently reduced the intracellular ROS level and inactivated apoptosis signal-regulating kinase (ASK1, Thr845), p38, and c-Jun N-terminal kinase (JNK) proteins. The HO-1 and Neu1 mRNA levels were increased by H 2O 2 (25 μM) and further elevated by the pretreatment with anthocyanins. Sialic acids added to the culture plates not only attenuated the cytotoxicity of H 2O 2 (25 μM) but also reduced intracellular ROS level. These results suggest that Cheongja 3 black soybean seed coat anthocyanins have brain neuroprotective effects against oxidative stress (H 2O 2) by inhibiting the activation of ASK1-JNK/p38 pathways, scavenging ROS, stimulating the expression of HO-1 and, more interestingly, recruiting cellular free sialic acids through up-regulation of Neu1 sialidase gene expression. Significance: This is the first report indicating potent health benefits of black soybean seed coat anthocyanins in neuroprotection by triggering mobilization of cellular free sialic acid and utilizing it as an additional biological antioxidant in brain neural cells.

Original languageEnglish
Pages (from-to)874-882
Number of pages9
JournalLife Sciences
Volume90
Issue number21-22
DOIs
StatePublished - 6 Jun 2012

Bibliographical note

Funding Information:
This work was supported by a grant (No. M10619000005-07N1900-00510 ) from the Korea Science and Engineering Foundation (KOSEF) and a grant (No. PJ0071862011 ) from the Cooperative Research Program for Agriculture Science and Technology Development, Rural Development Administration , and partly by a grant from the Next-Generation BioGreen 21 Program (SSAC, PJ008109 ), Rural Development Administration, Republic of Korea.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

Keywords

  • Anthocyanins
  • H O
  • Neu1 sialidase
  • Oxidative stress
  • Sialic acid

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